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/*
 * Really easy field validation with Prototype
 * http://tetlaw.id.au/view/javascript/really-easy-field-validation
 * Andrew Tetlaw
 * Version 1.5.4.1 (2007-01-05)
 *
 * Copyright (c) 2007 Andrew Tetlaw
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
var Validator = Class.create();

Validator.prototype = {
    initialize: function(className, error, test, options) {
        if (typeof test === 'function') {
            this.options = $H(options);
            this._test = test;
        } else {
            this.options = $H(test);
            this._test = function() {
                return true;
            };
        }
        this.error = error || 'Validation failed.';
        this.className = className;
    },
    test: function(v, elm) {
        return (this._test(v, elm) && this.options.all(function(p) {
            return Validator.methods[p.key] ? Validator.methods[p.key](v, elm, p.value) : true;
        }));
    }
};
Validator.methods = {
    pattern: function(v, elm, opt) {
        return Validation.get('IsEmpty').test(v) || opt.test(v);
    },
    minLength: function(v, elm, opt) {
        return v.length >= opt;
    },
    maxLength: function(v, elm, opt) {
        return v.length <= opt;
    },
    min: function(v, elm, opt) {
        return v >= parseFloat(opt);
    },
    max: function(v, elm, opt) {
        return v <= parseFloat(opt);
    },
    notOneOf: function(v, elm, opt) {
        return $A(opt).all(function(value) {
            return v !== value;
        });
    },
    oneOf: function(v, elm, opt) {
        return $A(opt).any(function(value) {
            return v === value;
        });
    },
    'is': function(v, elm, opt) {
        return v === opt;
    },
    isNot: function(v, elm, opt) {
        return v !== opt;
    },
    equalToField: function(v, elm, opt) {
        return v === $F(opt);
    },
    notEqualToField: function(v, elm, opt) {
        return v !== $F(opt);
    },
    include: function(v, elm, opt) {
        return $A(opt).all(function(value) {
            return Validation.get(value).test(v, elm);
        });
    }
};

var Validation = Class.create();

Validation.prototype = {
    initialize: function(form, options) {
        this.options = Object.extend({
            onSubmit: true,
            stopOnFirst: false,
            immediate: false,
            focusOnError: true,
            useTitles: false,
            onFormValidate: function(result, form) {
            },
            onElementValidate: function(result, elm) {
            }
        }, options || {});
        this.form = $(form);
        if (this.options.onSubmit) {
            Event.observe(this.form, 'submit', this.onSubmit.bind(this), false);
        }
        if (this.options.immediate) {
            var useTitles = this.options.useTitles;
            var callback = this.options.onElementValidate;
            Form.getElements(this.form).each(function(input) { // Thanks Mike!
                Event.observe(input, 'blur', function(ev) {
                    Validation.validate(Event.element(ev), {useTitle: useTitles, onElementValidate: callback});
                });
            });
        }
    },
    onSubmit: function(ev) {
        if (!this.validate()) {
            Event.stop(ev);
        }
    },
    validate: function() {
        var result = false;
        var useTitles = this.options.useTitles;
        var callback = this.options.onElementValidate;
        if (this.options.stopOnFirst) {
            result = Form.getElements(this.form).all(function(elm) {
                return Validation.validate(elm, {useTitle: useTitles, onElementValidate: callback});
            });
        } else {
            result = Form.getElements(this.form).collect(function(elm) {
                return Validation.validate(elm, {useTitle: useTitles, onElementValidate: callback});
            }).all();
        }
        if (!result && this.options.focusOnError) {
            Form.getElements(this.form).findAll(function(elm) {
                return $(elm).hasClassName('validation-failed');
            }).first().focus();
        }
        this.options.onFormValidate(result, this.form);
        return result;
    },
    reset: function() {
        Form.getElements(this.form).each(Validation.reset);
    }
};

Object.extend(Validation, {
    validate: function(elm, options) {
        options = Object.extend({
            useTitle: false,
            onElementValidate: function(result, elm) {
            }
        }, options || {});
        elm = $(elm);
        var cn = elm.classNames();
        var result = cn.all(function(value) {
            var test = Validation.test(value, elm, options.useTitle);
            options.onElementValidate(test, elm);
            return test;
        });
        return result;
    },
    test: function(name, elm, useTitle) {
        var v = Validation.get(name);
        var prop = '__advice' + name.camelize();
        try {
            if (Validation.isVisible(elm) && !v.test($F(elm), elm)) {
                if (!elm[prop]) {
                    var advice = Validation.getAdvice(name, elm);
                    if (advice === null) {
                        var errorMsg = useTitle ? ((elm && elm.title) ? elm.title : v.error) : v.error;
                        advice = '<div class="validation-advice" id="advice-' + name + '-' + Validation.getElmID(elm) + '" style="display:none">' + errorMsg + '</div>';
                        switch (elm.type.toLowerCase()) {
                            case 'checkbox':
                            case 'radio':
                                var p = elm.parentNode;
                                if (p) {
                                    new Insertion.Bottom(p, advice);
                                } else {
                                    new Insertion.After(elm, advice);
                                }
                                break;
                            default:
                                new Insertion.After(elm, advice);
                        }
                        advice = Validation.getAdvice(name, elm);
                    }
                    if (typeof Effect == 'undefined') {
                        advice.show();
                    } else {
                        new Effect.Appear(advice, {duration: 1});
                    }
                }
                elm[prop] = true;
                elm.removeClassName('validation-passed');
                elm.addClassName('validation-failed');
                return false;
            } else {
                var advice = Validation.getAdvice(name, elm);
                if (advice != null)
                    advice.hide();
                elm[prop] = '';
                elm.removeClassName('validation-failed');
                elm.addClassName('validation-passed');
                return true;
            }
        } catch (e) {
            throw(e);
        }
    },
    isVisible: function(elm) {
        while (elm.tagName != 'BODY') {
            if (!$(elm).visible())
                return false;
            elm = elm.parentNode;
        }
        return true;
    },
    getAdvice: function(name, elm) {
        return $('advice-' + name + '-' + Validation.getElmID(elm)) || $('advice-' + Validation.getElmID(elm));
    },
    getElmID: function(elm) {
        return elm.id ? elm.id : elm.name;
    },
    reset: function(elm) {
        elm = $(elm);
        var cn = elm.classNames();
        cn.each(function(value) {
            var prop = '__advice' + value.camelize();
            if (elm[prop]) {
                var advice = Validation.getAdvice(value, elm);
                advice.hide();
                elm[prop] = '';
            }
            elm.removeClassName('validation-failed');
            elm.removeClassName('validation-passed');
        });
    },
    add: function(className, error, test, options) {
        var nv = {};
        nv[className] = new Validator(className, error, test, options);
        Object.extend(Validation.methods, nv);
    },
    addAllThese: function(validators) {
        var nv = {};
        $A(validators).each(function(value) {
            nv[value[0]] = new Validator(value[0], value[1], value[2], (value.length > 3 ? value[3] : {}));
        });
        Object.extend(Validation.methods, nv);
    },
    get: function(name) {
        return Validation.methods[name] ? Validation.methods[name] : Validation.methods['_LikeNoIDIEverSaw_'];
    },
    methods: {
        '_LikeNoIDIEverSaw_': new Validator('_LikeNoIDIEverSaw_', '', {})
    }
});

Validation.add('IsEmpty', '', function(v) {
    return ((v == null) || (v.length == 0)); // || /^\s+$/.test(v));
});

Validation.addAllThese([
    ['required', 'This is a required field.', function(v) {
            return !Validation.get('IsEmpty').test(v);
        }],
    ['validate-number', 'Please enter a valid number in this field.', function(v) {
            return Validation.get('IsEmpty').test(v) || (!isNaN(v) && !/^\s+$/.test(v));
        }],
    ['validate-digits', 'Please use numbers only in this field. please avoid spaces or other characters such as dots or commas.', function(v) {
            return Validation.get('IsEmpty').test(v) || !/[^\d]/.test(v);
        }],
    ['validate-alpha', 'Please use letters only (a-z) in this field.', function(v) {
            return Validation.get('IsEmpty').test(v) || /^[a-zA-Z]+$/.test(v)
        }],
    ['validate-alphanum', 'Please use only letters (a-z) or numbers (0-9) only in this field. No spaces or other characters are allowed.', function(v) {
            return Validation.get('IsEmpty').test(v) || !/\W/.test(v)
        }],
    ['validate-date', 'Please enter a valid date.', function(v) {
//var test = new Date(v);
//return Validation.get('IsEmpty').test(v) || !isNaN(test);
            if (Validation.get('IsEmpty').test(v))
                return true;
            var regex = /^(\d{2})\/(\d{2})\/(\d{4})$/;
            if (!regex.test(v))
                return false;
            var d = new Date(v);
            return (parseInt(RegExp.$2, 10) == (1 + d.getMonth())) &&
                    (parseInt(RegExp.$1, 10) == d.getDate()) &&
                    (parseInt(RegExp.$3, 10) == d.getFullYear());
        }],
    ['validate-email', 'Please enter a valid email address. For example fred@domain.com.', function(v) {
            return Validation.get('IsEmpty').test(v) || /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/.test(v)
        }],
    ['validate-url', 'Please enter a valid URL.', function(v) {
            return Validation.get('IsEmpty').test(v) || /^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v)
        }],
    ['validate-date-au', 'Please use this date format: dd/mm/yyyy. For example 17/03/2006 for the 17th of March, 2006.', function(v) {
            if (Validation.get('IsEmpty').test(v))
                return true;
            var regex = /^(\d{2})\/(\d{2})\/(\d{4})$/;
            if (!regex.test(v))
                return false;
            var d = new Date(v.replace(regex, '$2/$1/$3'));
            return (parseInt(RegExp.$2, 10) == (1 + d.getMonth())) &&
                    (parseInt(RegExp.$1, 10) == d.getDate()) &&
                    (parseInt(RegExp.$3, 10) == d.getFullYear());
        }],
    ['validate-currency-dollar', 'Please enter a valid $ amount. For example $100.00 .', function(v) {
// [$]1[##][,###]+[.##]
// [$]1###+[.##]
// [$]0.##
// [$].##
            return Validation.get('IsEmpty').test(v) || /^\$?\-?([1-9]{1}[0-9]{0,2}(\,[0-9]{3})*(\.[0-9]{0,2})?|[1-9]{1}\d*(\.[0-9]{0,2})?|0(\.[0-9]{0,2})?|(\.[0-9]{1,2})?)$/.test(v)
        }],
    ['validate-selection', 'Please make a selection', function(v, elm) {
            return elm.options ? elm.selectedIndex > 0 : !Validation.get('IsEmpty').test(v);
        }],
    ['validate-one-required', 'Please select one of the above options.', function(v, elm) {
            var p = elm.parentNode;
            var options = p.getElementsByTagName('INPUT');
            return $A(options).any(function(elm) {
                return $F(elm);
            });
        }]
]);

